Add a BrowserViewRenderer unittest for compositor switch logic

android_webview/browser/test/rendering_test.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "android_webview/browser/test/rendering_test.h"
 
 #include <utility>
 
 #include "android_webview/browser/browser_view_renderer.h"
 #include "android_webview/browser/child_frame.h"
 #include "android_webview/browser/render_thread_manager.h"
 #include "base/location.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "cc/output/compositor_frame.h"
+#include "content/public/browser/android/synchronous_compositor.h"
 #include "content/public/test/test_synchronous_compositor_android.h"
 
 namespace android_webview {
 
 namespace {
 // BrowserViewRenderer subclass used for enabling tests to observe
 // OnParentDrawConstraintsUpdated.
 class TestBrowserViewRenderer : public BrowserViewRenderer {
  public:
   TestBrowserViewRenderer(
@@ skipping 48 matching lines @@
   return functor_->GetCompositorFrameConsumer();
 }
 
 CompositorFrameProducer* RenderingTest::GetCompositorFrameProducer() {
   return browser_view_renderer_.get();
 }
 
 void RenderingTest::InitializeCompositor() {
   DCHECK(!compositor_.get());
   DCHECK(browser_view_renderer_.get());
-  compositor_.reset(new content::TestSynchronousCompositor);
+  compositor_.reset(new content::TestSynchronousCompositor(0, 0));
   compositor_->SetClient(browser_view_renderer_.get());
 }
 
 void RenderingTest::RunTest() {
   SetUpTestHarness();
 
   ui_task_runner_->PostTask(
       FROM_HERE, base::Bind(&RenderingTest::StartTest, base::Unretained(this)));
   message_loop_->Run();
 }
 
 void RenderingTest::StartTest() {
   EndTest();
 }
 
 void RenderingTest::EndTest() {
   ui_task_runner_->PostTask(
       FROM_HERE,
       base::Bind(&RenderingTest::QuitMessageLoop, base::Unretained(this)));
 }
 
 void RenderingTest::QuitMessageLoop() {
   DCHECK_EQ(base::MessageLoop::current(), message_loop_.get());
   message_loop_->QuitWhenIdle();
 }
 
+content::SynchronousCompositor* RenderingTest::ActiveCompositor() const {
+  return browser_view_renderer_->GetActiveCompositorForTesting();
+}
+
 std::unique_ptr<cc::CompositorFrame> RenderingTest::ConstructEmptyFrame() {
   std::unique_ptr<cc::CompositorFrame> compositor_frame(
       new cc::CompositorFrame);
   std::unique_ptr<cc::DelegatedFrameData> frame(new cc::DelegatedFrameData);
   std::unique_ptr<cc::RenderPass> root_pass(cc::RenderPass::Create());
   gfx::Rect viewport(browser_view_renderer_->size());
   root_pass->SetNew(cc::RenderPassId(1, 1), viewport, viewport,
                     gfx::Transform());
   frame->render_pass_list.push_back(std::move(root_pass));
   compositor_frame->delegated_frame_data = std::move(frame);
@@ skipping 32 matching lines @@
 void RenderingTest::PostInvalidate() {
   if (window_)
     window_->PostInvalidate();
 }
 
 gfx::Point RenderingTest::GetLocationOnScreen() {
   return gfx::Point();
 }
 
 }  // namespace android_webview